This was happening to me again today, too, especially in the last hour or so. I experienced it on open positions in CEFT and CLS. I contacted IB, and they pointed me to the bulletin about Island quotes being delayed. But what isn't clear to me is why delays only in Island quotes would prevent revised quotes from other ECNs and market makers from being reflected on the best bid and best ask quotes in TWS. In any case, I'm glad to hear that IB thinks the problem has been resolved.